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The UDP-glycosyltransferase gene OsUGT706E2 negatively regulates rice tolerance to blast disease and abiotic stresses

文献类型： 外文期刊

作者： Chen, Pingli 1 ; Jiang, Liqun 1 ; Zhang, Lanlan 1 ; Sun, Bingrui 1 ; Lv, Shuwei 1 ; Zhang, Jing 1 ; Yu, Hang 1 ; Mao, Xingxue 1 ; Fan, Zhilan 1 ; Li, Chen 1 ; Chen, Wenfeng 1 ; Liu, Qing 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Rice Res Inst, Key Lab Genet Breeding High Qual Rice Southern Chi, Guangdong Key Lab New Technol Rice Breeding,Guangd, Guangzhou 510640, Peoples R China

关键词： UDP-glycosyltransferase; Blast disease; Cold stress; Osmotic stress

期刊名称：ENVIRONMENTAL AND EXPERIMENTAL BOTANY （ 影响因子：4.5； 五年影响因子：5.2 ）

ISSN： 0098-8472

年卷期： 2024 年 226 卷

页码：

收录情况： SCI

摘要： Despite the crucial role of UDP-glycosyltransferases (UGTs) in various stress responses in plants, their biological functions in rice ( Oryza sativa L.) remain poorly understood. In this study, we introduce a novel gene, OsUGT706E2 , which is expressed at significantly higher levels in wild rice compared to cultivated rice. OsUGT706E2 is active in multiple tissues and localizes to both the nucleus and cytoplasm. Its transcription is notably up-regulated in response to cold stress, blast disease, and several hormone treatments. Overexpression of OsUGT706E2 markedly reduces seedling tolerance to blast disease, cold, and osmotic stress, whereas knocking out OsUGT706E2 enhances seedling tolerance to blast disease and osmotic stress. The expression levels of stressrelated genes in OsUGT706E2 overexpressing plants were significantly lower compared to wild-type plants following stress treatment. Conversely, OsUGT706E2 knockout plants exhibited markedly higher expression levels of these genes than the control plants after stress treatment. Metabolome analysis further indicated that OsUGT760E2 influences metabolite content in rice. Specifically, OsUGT760E2overexpressing seedlings had higher amino acid content and lower lipid content compared to wild-type seedlings, while OsUGT760E2knockout seedlings showed lower amino acid content and higher lipid content than control seedlings. These findings suggest that OsUGT760E2 negatively regulates resistance to blast disease as well as tolerance to cold and osmotic stress in rice. As a result, OsUGT760E2 represents a promising target for enhancing rice stress tolerance through gene editing approaches.

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